linux-kernel - Re: [PATCH 21/21] MODSIGN: Apply signature checking to modules on module load [ver #3]

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Message-ID: <24260.1323908071@redhat.com>
Date:	Thu, 15 Dec 2011 00:14:31 +0000
From:	David Howells <dhowells@...hat.com>
To:	Rusty Russell <rusty@...abs.org>
Cc:	dhowells@...hat.com, keyrings@...ux-nfs.org,
	linux-crypto@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, dmitry.kasatkin@...el.com,
	zohar@...ux.vnet.ibm.com, arjan.van.de.ven@...el.com,
	alan.cox@...el.com, Jon Masters <jcm@...masters.org>
Subject: Re: [PATCH 21/21] MODSIGN: Apply signature checking to modules on module load [ver #3]

Rusty Russell <rusty@...abs.org> wrote:

> > > We can have false positives, but at worst that make us report EINVAL
> > > (bad signature) instead of ENOENT (no signature).
> > 
> > EKEYREJECTED please; that way it's the same as RHEL does now.
> 
> OK, sure (who knew that was there?).

Second paragraph in the description of patch #21:

	These patches have been in use by RHEL and Fedora kernels for years,
	and so have been thoroughly tested.

Further down the description:

	Any module for which the kernel has a key, but which proves to have a
	signature mismatch will not be permitted to load (returning
	EKEYREJECTED).

David
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